/*******************************************************************************
 * Copyright 2014 United States Government as represented by the
 * Administrator of the National Aeronautics and Space Administration.
 * All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package gov.nasa.ensemble.core.plan;

import gov.nasa.ensemble.core.model.plan.EActivity;
import gov.nasa.ensemble.core.model.plan.EPlanElement;
import gov.nasa.ensemble.core.model.plan.util.ParameterDescriptor;

import org.eclipse.emf.ecore.EStructuralFeature;

public class PlanParameterDescriptor {

	private static PlanParameterDescriptor instance = new PlanParameterDescriptor();
	public static PlanParameterDescriptor getInstance() {
		return instance;
	}
	
	/**
	 * Returns the editability state of parameters as indexed by their programatic key.
	 * @param key the key of the parameter
	 * @return the editability state
	 */
	public boolean isEditable(EPlanElement element, EStructuralFeature feature) {
		ParameterDescriptor descriptor = ParameterDescriptor.getInstance();
		boolean editable = true;
		if (element instanceof EActivity
				&& descriptor.isEditable(feature)) {
			EActivity activity = (EActivity) element;
			if (activity.isIsSubActivity()) {
				editable = false;
			}
		}
		return editable;
	}

}
